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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Qualcomm Serial USB driver
4 *
5 * Copyright (c) 2008 QUALCOMM Incorporated.
6 * Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de>
7 * Copyright (c) 2009 Novell Inc.
8 */
9
10#include <linux/tty.h>
11#include <linux/tty_flip.h>
12#include <linux/module.h>
13#include <linux/usb.h>
14#include <linux/usb/serial.h>
15#include <linux/slab.h>
16#include "usb-wwan.h"
17
18#define DRIVER_AUTHOR "Qualcomm Inc"
19#define DRIVER_DESC "Qualcomm USB Serial driver"
20
21#define QUECTEL_EC20_PID 0x9215
22
23/* standard device layouts supported by this driver */
24enum qcserial_layouts {
25 QCSERIAL_G2K = 0, /* Gobi 2000 */
26 QCSERIAL_G1K = 1, /* Gobi 1000 */
27 QCSERIAL_SWI = 2, /* Sierra Wireless */
28 QCSERIAL_HWI = 3, /* Huawei */
29};
30
31#define DEVICE_G1K(v, p) \
32 USB_DEVICE(v, p), .driver_info = QCSERIAL_G1K
33#define DEVICE_SWI(v, p) \
34 USB_DEVICE(v, p), .driver_info = QCSERIAL_SWI
35#define DEVICE_HWI(v, p) \
36 USB_DEVICE(v, p), .driver_info = QCSERIAL_HWI
37
38static const struct usb_device_id id_table[] = {
39 /* Gobi 1000 devices */
40 {DEVICE_G1K(0x05c6, 0x9211)}, /* Acer Gobi QDL device */
41 {DEVICE_G1K(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
42 {DEVICE_G1K(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */
43 {DEVICE_G1K(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */
44 {DEVICE_G1K(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */
45 {DEVICE_G1K(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */
46 {DEVICE_G1K(0x413c, 0x8172)}, /* Dell Gobi Modem device */
47 {DEVICE_G1K(0x413c, 0x8171)}, /* Dell Gobi QDL device */
48 {DEVICE_G1K(0x1410, 0xa001)}, /* Novatel/Verizon USB-1000 */
49 {DEVICE_G1K(0x1410, 0xa002)}, /* Novatel Gobi Modem device */
50 {DEVICE_G1K(0x1410, 0xa003)}, /* Novatel Gobi Modem device */
51 {DEVICE_G1K(0x1410, 0xa004)}, /* Novatel Gobi Modem device */
52 {DEVICE_G1K(0x1410, 0xa005)}, /* Novatel Gobi Modem device */
53 {DEVICE_G1K(0x1410, 0xa006)}, /* Novatel Gobi Modem device */
54 {DEVICE_G1K(0x1410, 0xa007)}, /* Novatel Gobi Modem device */
55 {DEVICE_G1K(0x1410, 0xa008)}, /* Novatel Gobi QDL device */
56 {DEVICE_G1K(0x0b05, 0x1776)}, /* Asus Gobi Modem device */
57 {DEVICE_G1K(0x0b05, 0x1774)}, /* Asus Gobi QDL device */
58 {DEVICE_G1K(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */
59 {DEVICE_G1K(0x19d2, 0xfff2)}, /* ONDA Gobi QDL device */
60 {DEVICE_G1K(0x1557, 0x0a80)}, /* OQO Gobi QDL device */
61 {DEVICE_G1K(0x05c6, 0x9001)}, /* Generic Gobi Modem device */
62 {DEVICE_G1K(0x05c6, 0x9002)}, /* Generic Gobi Modem device */
63 {DEVICE_G1K(0x05c6, 0x9202)}, /* Generic Gobi Modem device */
64 {DEVICE_G1K(0x05c6, 0x9203)}, /* Generic Gobi Modem device */
65 {DEVICE_G1K(0x05c6, 0x9222)}, /* Generic Gobi Modem device */
66 {DEVICE_G1K(0x05c6, 0x9008)}, /* Generic Gobi QDL device */
67 {DEVICE_G1K(0x05c6, 0x9009)}, /* Generic Gobi Modem device */
68 {DEVICE_G1K(0x05c6, 0x9201)}, /* Generic Gobi QDL device */
69 {DEVICE_G1K(0x05c6, 0x9221)}, /* Generic Gobi QDL device */
70 {DEVICE_G1K(0x05c6, 0x9231)}, /* Generic Gobi QDL device */
71 {DEVICE_G1K(0x1f45, 0x0001)}, /* Unknown Gobi QDL device */
72 {DEVICE_G1K(0x1bc7, 0x900e)}, /* Telit Gobi QDL device */
73
74 /* Gobi 2000 devices */
75 {USB_DEVICE(0x1410, 0xa010)}, /* Novatel Gobi 2000 QDL device */
76 {USB_DEVICE(0x1410, 0xa011)}, /* Novatel Gobi 2000 QDL device */
77 {USB_DEVICE(0x1410, 0xa012)}, /* Novatel Gobi 2000 QDL device */
78 {USB_DEVICE(0x1410, 0xa013)}, /* Novatel Gobi 2000 QDL device */
79 {USB_DEVICE(0x1410, 0xa014)}, /* Novatel Gobi 2000 QDL device */
80 {USB_DEVICE(0x413c, 0x8185)}, /* Dell Gobi 2000 QDL device (N0218, VU936) */
81 {USB_DEVICE(0x413c, 0x8186)}, /* Dell Gobi 2000 Modem device (N0218, VU936) */
82 {USB_DEVICE(0x05c6, 0x9208)}, /* Generic Gobi 2000 QDL device */
83 {USB_DEVICE(0x05c6, 0x920b)}, /* Generic Gobi 2000 Modem device */
84 {USB_DEVICE(0x05c6, 0x9224)}, /* Sony Gobi 2000 QDL device (N0279, VU730) */
85 {USB_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */
86 {USB_DEVICE(0x05c6, 0x9244)}, /* Samsung Gobi 2000 QDL device (VL176) */
87 {USB_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */
88 {USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */
89 {USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
90 {USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */
91 {USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
92 {USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */
93 {USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
94 {USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */
95 {USB_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */
96 {USB_DEVICE(0x05c6, 0x9274)}, /* iRex Technologies Gobi 2000 QDL device (VR307) */
97 {USB_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */
98 {USB_DEVICE(0x1199, 0x9000)}, /* Sierra Wireless Gobi 2000 QDL device (VT773) */
99 {USB_DEVICE(0x1199, 0x9001)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
100 {USB_DEVICE(0x1199, 0x9002)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
101 {USB_DEVICE(0x1199, 0x9003)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
102 {USB_DEVICE(0x1199, 0x9004)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
103 {USB_DEVICE(0x1199, 0x9005)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
104 {USB_DEVICE(0x1199, 0x9006)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
105 {USB_DEVICE(0x1199, 0x9007)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
106 {USB_DEVICE(0x1199, 0x9008)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
107 {USB_DEVICE(0x1199, 0x9009)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
108 {USB_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
109 {USB_DEVICE(0x1199, 0x9011)}, /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
110 {USB_DEVICE(0x16d8, 0x8001)}, /* CMDTech Gobi 2000 QDL device (VU922) */
111 {USB_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */
112 {USB_DEVICE(0x05c6, 0x9204)}, /* Gobi 2000 QDL device */
113 {USB_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */
114
115 /* Gobi 3000 devices */
116 {USB_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Gobi 3000 QDL */
117 {USB_DEVICE(0x05c6, 0x920c)}, /* Gobi 3000 QDL */
118 {USB_DEVICE(0x05c6, 0x920d)}, /* Gobi 3000 Composite */
119 {USB_DEVICE(0x1410, 0xa020)}, /* Novatel Gobi 3000 QDL */
120 {USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */
121 {USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */
122 {USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */
123 {USB_DEVICE(0x413c, 0x81a6)}, /* Dell DW5570 QDL (MC8805) */
124 {USB_DEVICE(0x1199, 0x68a4)}, /* Sierra Wireless QDL */
125 {USB_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */
126 {USB_DEVICE(0x1199, 0x68a8)}, /* Sierra Wireless QDL */
127 {USB_DEVICE(0x1199, 0x68a9)}, /* Sierra Wireless Modem */
128 {USB_DEVICE(0x1199, 0x9010)}, /* Sierra Wireless Gobi 3000 QDL */
129 {USB_DEVICE(0x1199, 0x9012)}, /* Sierra Wireless Gobi 3000 QDL */
130 {USB_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
131 {USB_DEVICE(0x1199, 0x9014)}, /* Sierra Wireless Gobi 3000 QDL */
132 {USB_DEVICE(0x1199, 0x9015)}, /* Sierra Wireless Gobi 3000 Modem device */
133 {USB_DEVICE(0x1199, 0x9018)}, /* Sierra Wireless Gobi 3000 QDL */
134 {USB_DEVICE(0x1199, 0x9019)}, /* Sierra Wireless Gobi 3000 Modem device */
135 {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */
136 {USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */
137 {USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */
138 {USB_DEVICE(0x0AF0, 0x8120)}, /* Option GTM681W */
139
140 /* non-Gobi Sierra Wireless devices */
141 {DEVICE_SWI(0x03f0, 0x4e1d)}, /* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
142 {DEVICE_SWI(0x0f3d, 0x68a2)}, /* Sierra Wireless MC7700 */
143 {DEVICE_SWI(0x114f, 0x68a2)}, /* Sierra Wireless MC7750 */
144 {DEVICE_SWI(0x1199, 0x68a2)}, /* Sierra Wireless MC7710 */
145 {DEVICE_SWI(0x1199, 0x68c0)}, /* Sierra Wireless MC7304/MC7354 */
146 {DEVICE_SWI(0x1199, 0x901c)}, /* Sierra Wireless EM7700 */
147 {DEVICE_SWI(0x1199, 0x901e)}, /* Sierra Wireless EM7355 QDL */
148 {DEVICE_SWI(0x1199, 0x901f)}, /* Sierra Wireless EM7355 */
149 {DEVICE_SWI(0x1199, 0x9040)}, /* Sierra Wireless Modem */
150 {DEVICE_SWI(0x1199, 0x9041)}, /* Sierra Wireless MC7305/MC7355 */
151 {DEVICE_SWI(0x1199, 0x9051)}, /* Netgear AirCard 340U */
152 {DEVICE_SWI(0x1199, 0x9053)}, /* Sierra Wireless Modem */
153 {DEVICE_SWI(0x1199, 0x9054)}, /* Sierra Wireless Modem */
154 {DEVICE_SWI(0x1199, 0x9055)}, /* Netgear AirCard 341U */
155 {DEVICE_SWI(0x1199, 0x9056)}, /* Sierra Wireless Modem */
156 {DEVICE_SWI(0x1199, 0x9060)}, /* Sierra Wireless Modem */
157 {DEVICE_SWI(0x1199, 0x9061)}, /* Sierra Wireless Modem */
158 {DEVICE_SWI(0x1199, 0x9062)}, /* Sierra Wireless EM7305 QDL */
159 {DEVICE_SWI(0x1199, 0x9063)}, /* Sierra Wireless EM7305 */
160 {DEVICE_SWI(0x1199, 0x9070)}, /* Sierra Wireless MC74xx */
161 {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx */
162 {DEVICE_SWI(0x1199, 0x9078)}, /* Sierra Wireless EM74xx */
163 {DEVICE_SWI(0x1199, 0x9079)}, /* Sierra Wireless EM74xx */
164 {DEVICE_SWI(0x1199, 0x907a)}, /* Sierra Wireless EM74xx QDL */
165 {DEVICE_SWI(0x1199, 0x907b)}, /* Sierra Wireless EM74xx */
166 {DEVICE_SWI(0x1199, 0x9090)}, /* Sierra Wireless EM7565 QDL */
167 {DEVICE_SWI(0x1199, 0x9091)}, /* Sierra Wireless EM7565 */
168 {DEVICE_SWI(0x1199, 0x90d2)}, /* Sierra Wireless EM9191 QDL */
169 {DEVICE_SWI(0x1199, 0xc080)}, /* Sierra Wireless EM7590 QDL */
170 {DEVICE_SWI(0x1199, 0xc081)}, /* Sierra Wireless EM7590 */
171 {DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
172 {DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
173 {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
174 {DEVICE_SWI(0x413c, 0x81a8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
175 {DEVICE_SWI(0x413c, 0x81a9)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
176 {DEVICE_SWI(0x413c, 0x81b1)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
177 {DEVICE_SWI(0x413c, 0x81b3)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
178 {DEVICE_SWI(0x413c, 0x81b5)}, /* Dell Wireless 5811e QDL */
179 {DEVICE_SWI(0x413c, 0x81b6)}, /* Dell Wireless 5811e QDL */
180 {DEVICE_SWI(0x413c, 0x81c2)}, /* Dell Wireless 5811e */
181 {DEVICE_SWI(0x413c, 0x81cb)}, /* Dell Wireless 5816e QDL */
182 {DEVICE_SWI(0x413c, 0x81cc)}, /* Dell Wireless 5816e */
183 {DEVICE_SWI(0x413c, 0x81cf)}, /* Dell Wireless 5819 */
184 {DEVICE_SWI(0x413c, 0x81d0)}, /* Dell Wireless 5819 */
185 {DEVICE_SWI(0x413c, 0x81d1)}, /* Dell Wireless 5818 */
186 {DEVICE_SWI(0x413c, 0x81d2)}, /* Dell Wireless 5818 */
187 {DEVICE_SWI(0x413c, 0x8217)}, /* Dell Wireless DW5826e */
188 {DEVICE_SWI(0x413c, 0x8218)}, /* Dell Wireless DW5826e QDL */
189
190 /* Huawei devices */
191 {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
192
193 { } /* Terminating entry */
194};
195MODULE_DEVICE_TABLE(usb, id_table);
196
197static int handle_quectel_ec20(struct device *dev, int ifnum)
198{
199 int altsetting = 0;
200
201 /*
202 * Quectel EC20 Mini PCIe LTE module layout:
203 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
204 * 1: NMEA
205 * 2: AT-capable modem port
206 * 3: Modem interface
207 * 4: NDIS
208 */
209 switch (ifnum) {
210 case 0:
211 dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n");
212 break;
213 case 1:
214 dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n");
215 break;
216 case 2:
217 case 3:
218 dev_dbg(dev, "Quectel EC20 Modem port found\n");
219 break;
220 case 4:
221 /* Don't claim the QMI/net interface */
222 altsetting = -1;
223 break;
224 }
225
226 return altsetting;
227}
228
229static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
230{
231 struct usb_host_interface *intf = serial->interface->cur_altsetting;
232 struct device *dev = &serial->dev->dev;
233 int retval = -ENODEV;
234 __u8 nintf;
235 __u8 ifnum;
236 int altsetting = -1;
237 bool sendsetup = false;
238
239 /* we only support vendor specific functions */
240 if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
241 goto done;
242
243 nintf = serial->dev->actconfig->desc.bNumInterfaces;
244 dev_dbg(dev, "Num Interfaces = %d\n", nintf);
245 ifnum = intf->desc.bInterfaceNumber;
246 dev_dbg(dev, "This Interface = %d\n", ifnum);
247
248 if (nintf == 1) {
249 /* QDL mode */
250 /* Gobi 2000 has a single altsetting, older ones have two */
251 if (serial->interface->num_altsetting == 2)
252 intf = usb_altnum_to_altsetting(serial->interface, 1);
253 else if (serial->interface->num_altsetting > 2)
254 goto done;
255
256 if (intf && intf->desc.bNumEndpoints == 2 &&
257 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
258 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
259 dev_dbg(dev, "QDL port found\n");
260
261 if (serial->interface->num_altsetting == 1)
262 retval = 0; /* Success */
263 else
264 altsetting = 1;
265 }
266 goto done;
267
268 }
269
270 /* default to enabling interface */
271 altsetting = 0;
272
273 /*
274 * Composite mode; don't bind to the QMI/net interface as that
275 * gets handled by other drivers.
276 */
277
278 switch (id->driver_info) {
279 case QCSERIAL_G1K:
280 /*
281 * Gobi 1K USB layout:
282 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
283 * 1: serial port (doesn't respond)
284 * 2: AT-capable modem port
285 * 3: QMI/net
286 */
287 if (nintf < 3 || nintf > 4) {
288 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
289 altsetting = -1;
290 goto done;
291 }
292
293 if (ifnum == 0) {
294 dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n");
295 altsetting = 1;
296 } else if (ifnum == 2)
297 dev_dbg(dev, "Modem port found\n");
298 else
299 altsetting = -1;
300 break;
301 case QCSERIAL_G2K:
302 /* handle non-standard layouts */
303 if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) {
304 altsetting = handle_quectel_ec20(dev, ifnum);
305 goto done;
306 }
307
308 /*
309 * Gobi 2K+ USB layout:
310 * 0: QMI/net
311 * 1: DM/DIAG (use libqcdm from ModemManager for communication)
312 * 2: AT-capable modem port
313 * 3: NMEA
314 */
315 if (nintf < 3 || nintf > 4) {
316 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
317 altsetting = -1;
318 goto done;
319 }
320
321 switch (ifnum) {
322 case 0:
323 /* Don't claim the QMI/net interface */
324 altsetting = -1;
325 break;
326 case 1:
327 dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
328 break;
329 case 2:
330 dev_dbg(dev, "Modem port found\n");
331 break;
332 case 3:
333 /*
334 * NMEA (serial line 9600 8N1)
335 * # echo "\$GPS_START" > /dev/ttyUSBx
336 * # echo "\$GPS_STOP" > /dev/ttyUSBx
337 */
338 dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
339 break;
340 }
341 break;
342 case QCSERIAL_SWI:
343 /*
344 * Sierra Wireless layout:
345 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
346 * 2: NMEA
347 * 3: AT-capable modem port
348 * 8: QMI/net
349 */
350 switch (ifnum) {
351 case 0:
352 dev_dbg(dev, "DM/DIAG interface found\n");
353 break;
354 case 2:
355 dev_dbg(dev, "NMEA GPS interface found\n");
356 sendsetup = true;
357 break;
358 case 3:
359 dev_dbg(dev, "Modem port found\n");
360 sendsetup = true;
361 break;
362 default:
363 /* don't claim any unsupported interface */
364 altsetting = -1;
365 break;
366 }
367 break;
368 case QCSERIAL_HWI:
369 /*
370 * Huawei devices map functions by subclass + protocol
371 * instead of interface numbers. The protocol identify
372 * a specific function, while the subclass indicate a
373 * specific firmware source
374 *
375 * This is a list of functions known to be non-serial. The rest
376 * are assumed to be serial and will be handled by this driver
377 */
378 switch (intf->desc.bInterfaceProtocol) {
379 /* QMI combined (qmi_wwan) */
380 case 0x07:
381 case 0x37:
382 case 0x67:
383 /* QMI data (qmi_wwan) */
384 case 0x08:
385 case 0x38:
386 case 0x68:
387 /* QMI control (qmi_wwan) */
388 case 0x09:
389 case 0x39:
390 case 0x69:
391 /* NCM like (huawei_cdc_ncm) */
392 case 0x16:
393 case 0x46:
394 case 0x76:
395 altsetting = -1;
396 break;
397 default:
398 dev_dbg(dev, "Huawei type serial port found (%02x/%02x/%02x)\n",
399 intf->desc.bInterfaceClass,
400 intf->desc.bInterfaceSubClass,
401 intf->desc.bInterfaceProtocol);
402 }
403 break;
404 default:
405 dev_err(dev, "unsupported device layout type: %lu\n",
406 id->driver_info);
407 break;
408 }
409
410done:
411 if (altsetting >= 0) {
412 retval = usb_set_interface(serial->dev, ifnum, altsetting);
413 if (retval < 0) {
414 dev_err(dev,
415 "Could not set interface, error %d\n",
416 retval);
417 retval = -ENODEV;
418 }
419 }
420
421 if (!retval)
422 usb_set_serial_data(serial, (void *)(unsigned long)sendsetup);
423
424 return retval;
425}
426
427static int qc_attach(struct usb_serial *serial)
428{
429 struct usb_wwan_intf_private *data;
430 bool sendsetup;
431
432 data = kzalloc(sizeof(*data), GFP_KERNEL);
433 if (!data)
434 return -ENOMEM;
435
436 sendsetup = !!(unsigned long)(usb_get_serial_data(serial));
437 if (sendsetup)
438 data->use_send_setup = 1;
439
440 spin_lock_init(&data->susp_lock);
441
442 usb_set_serial_data(serial, data);
443
444 return 0;
445}
446
447static void qc_release(struct usb_serial *serial)
448{
449 struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
450
451 usb_set_serial_data(serial, NULL);
452 kfree(priv);
453}
454
455static struct usb_serial_driver qcdevice = {
456 .driver = {
457 .owner = THIS_MODULE,
458 .name = "qcserial",
459 },
460 .description = "Qualcomm USB modem",
461 .id_table = id_table,
462 .num_ports = 1,
463 .probe = qcprobe,
464 .open = usb_wwan_open,
465 .close = usb_wwan_close,
466 .dtr_rts = usb_wwan_dtr_rts,
467 .write = usb_wwan_write,
468 .write_room = usb_wwan_write_room,
469 .chars_in_buffer = usb_wwan_chars_in_buffer,
470 .tiocmget = usb_wwan_tiocmget,
471 .tiocmset = usb_wwan_tiocmset,
472 .attach = qc_attach,
473 .release = qc_release,
474 .port_probe = usb_wwan_port_probe,
475 .port_remove = usb_wwan_port_remove,
476#ifdef CONFIG_PM
477 .suspend = usb_wwan_suspend,
478 .resume = usb_wwan_resume,
479#endif
480};
481
482static struct usb_serial_driver * const serial_drivers[] = {
483 &qcdevice, NULL
484};
485
486module_usb_serial_driver(serial_drivers, id_table);
487
488MODULE_AUTHOR(DRIVER_AUTHOR);
489MODULE_DESCRIPTION(DRIVER_DESC);
490MODULE_LICENSE("GPL v2");
1/*
2 * Qualcomm Serial USB driver
3 *
4 * Copyright (c) 2008 QUALCOMM Incorporated.
5 * Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de>
6 * Copyright (c) 2009 Novell Inc.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version
10 * 2 as published by the Free Software Foundation.
11 *
12 */
13
14#include <linux/tty.h>
15#include <linux/tty_flip.h>
16#include <linux/module.h>
17#include <linux/usb.h>
18#include <linux/usb/serial.h>
19#include <linux/slab.h>
20#include "usb-wwan.h"
21
22#define DRIVER_AUTHOR "Qualcomm Inc"
23#define DRIVER_DESC "Qualcomm USB Serial driver"
24
25#define DEVICE_G1K(v, p) \
26 USB_DEVICE(v, p), .driver_info = 1
27
28static const struct usb_device_id id_table[] = {
29 /* Gobi 1000 devices */
30 {DEVICE_G1K(0x05c6, 0x9211)}, /* Acer Gobi QDL device */
31 {DEVICE_G1K(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
32 {DEVICE_G1K(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */
33 {DEVICE_G1K(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */
34 {DEVICE_G1K(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */
35 {DEVICE_G1K(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */
36 {DEVICE_G1K(0x413c, 0x8172)}, /* Dell Gobi Modem device */
37 {DEVICE_G1K(0x413c, 0x8171)}, /* Dell Gobi QDL device */
38 {DEVICE_G1K(0x1410, 0xa001)}, /* Novatel/Verizon USB-1000 */
39 {DEVICE_G1K(0x1410, 0xa002)}, /* Novatel Gobi Modem device */
40 {DEVICE_G1K(0x1410, 0xa003)}, /* Novatel Gobi Modem device */
41 {DEVICE_G1K(0x1410, 0xa004)}, /* Novatel Gobi Modem device */
42 {DEVICE_G1K(0x1410, 0xa005)}, /* Novatel Gobi Modem device */
43 {DEVICE_G1K(0x1410, 0xa006)}, /* Novatel Gobi Modem device */
44 {DEVICE_G1K(0x1410, 0xa007)}, /* Novatel Gobi Modem device */
45 {DEVICE_G1K(0x1410, 0xa008)}, /* Novatel Gobi QDL device */
46 {DEVICE_G1K(0x0b05, 0x1776)}, /* Asus Gobi Modem device */
47 {DEVICE_G1K(0x0b05, 0x1774)}, /* Asus Gobi QDL device */
48 {DEVICE_G1K(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */
49 {DEVICE_G1K(0x19d2, 0xfff2)}, /* ONDA Gobi QDL device */
50 {DEVICE_G1K(0x1557, 0x0a80)}, /* OQO Gobi QDL device */
51 {DEVICE_G1K(0x05c6, 0x9001)}, /* Generic Gobi Modem device */
52 {DEVICE_G1K(0x05c6, 0x9002)}, /* Generic Gobi Modem device */
53 {DEVICE_G1K(0x05c6, 0x9202)}, /* Generic Gobi Modem device */
54 {DEVICE_G1K(0x05c6, 0x9203)}, /* Generic Gobi Modem device */
55 {DEVICE_G1K(0x05c6, 0x9222)}, /* Generic Gobi Modem device */
56 {DEVICE_G1K(0x05c6, 0x9008)}, /* Generic Gobi QDL device */
57 {DEVICE_G1K(0x05c6, 0x9009)}, /* Generic Gobi Modem device */
58 {DEVICE_G1K(0x05c6, 0x9201)}, /* Generic Gobi QDL device */
59 {DEVICE_G1K(0x05c6, 0x9221)}, /* Generic Gobi QDL device */
60 {DEVICE_G1K(0x05c6, 0x9231)}, /* Generic Gobi QDL device */
61 {DEVICE_G1K(0x1f45, 0x0001)}, /* Unknown Gobi QDL device */
62 {DEVICE_G1K(0x1bc7, 0x900e)}, /* Telit Gobi QDL device */
63
64 /* Gobi 2000 devices */
65 {USB_DEVICE(0x1410, 0xa010)}, /* Novatel Gobi 2000 QDL device */
66 {USB_DEVICE(0x1410, 0xa011)}, /* Novatel Gobi 2000 QDL device */
67 {USB_DEVICE(0x1410, 0xa012)}, /* Novatel Gobi 2000 QDL device */
68 {USB_DEVICE(0x1410, 0xa013)}, /* Novatel Gobi 2000 QDL device */
69 {USB_DEVICE(0x1410, 0xa014)}, /* Novatel Gobi 2000 QDL device */
70 {USB_DEVICE(0x413c, 0x8185)}, /* Dell Gobi 2000 QDL device (N0218, VU936) */
71 {USB_DEVICE(0x413c, 0x8186)}, /* Dell Gobi 2000 Modem device (N0218, VU936) */
72 {USB_DEVICE(0x05c6, 0x9208)}, /* Generic Gobi 2000 QDL device */
73 {USB_DEVICE(0x05c6, 0x920b)}, /* Generic Gobi 2000 Modem device */
74 {USB_DEVICE(0x05c6, 0x9224)}, /* Sony Gobi 2000 QDL device (N0279, VU730) */
75 {USB_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */
76 {USB_DEVICE(0x05c6, 0x9244)}, /* Samsung Gobi 2000 QDL device (VL176) */
77 {USB_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */
78 {USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */
79 {USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
80 {USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */
81 {USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
82 {USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */
83 {USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
84 {USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */
85 {USB_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */
86 {USB_DEVICE(0x05c6, 0x9274)}, /* iRex Technologies Gobi 2000 QDL device (VR307) */
87 {USB_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */
88 {USB_DEVICE(0x1199, 0x9000)}, /* Sierra Wireless Gobi 2000 QDL device (VT773) */
89 {USB_DEVICE(0x1199, 0x9001)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
90 {USB_DEVICE(0x1199, 0x9002)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
91 {USB_DEVICE(0x1199, 0x9003)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
92 {USB_DEVICE(0x1199, 0x9004)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
93 {USB_DEVICE(0x1199, 0x9005)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
94 {USB_DEVICE(0x1199, 0x9006)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
95 {USB_DEVICE(0x1199, 0x9007)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
96 {USB_DEVICE(0x1199, 0x9008)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
97 {USB_DEVICE(0x1199, 0x9009)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
98 {USB_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
99 {USB_DEVICE(0x1199, 0x9011)}, /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
100 {USB_DEVICE(0x16d8, 0x8001)}, /* CMDTech Gobi 2000 QDL device (VU922) */
101 {USB_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */
102 {USB_DEVICE(0x05c6, 0x9204)}, /* Gobi 2000 QDL device */
103 {USB_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */
104
105 /* Gobi 3000 devices */
106 {USB_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Gobi 3000 QDL */
107 {USB_DEVICE(0x05c6, 0x920c)}, /* Gobi 3000 QDL */
108 {USB_DEVICE(0x05c6, 0x920d)}, /* Gobi 3000 Composite */
109 {USB_DEVICE(0x1410, 0xa020)}, /* Novatel Gobi 3000 QDL */
110 {USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */
111 {USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */
112 {USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */
113 {USB_DEVICE(0x1199, 0x68a4)}, /* Sierra Wireless QDL */
114 {USB_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */
115 {USB_DEVICE(0x1199, 0x68a8)}, /* Sierra Wireless QDL */
116 {USB_DEVICE(0x1199, 0x68a9)}, /* Sierra Wireless Modem */
117 {USB_DEVICE(0x1199, 0x9010)}, /* Sierra Wireless Gobi 3000 QDL */
118 {USB_DEVICE(0x1199, 0x9012)}, /* Sierra Wireless Gobi 3000 QDL */
119 {USB_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
120 {USB_DEVICE(0x1199, 0x9014)}, /* Sierra Wireless Gobi 3000 QDL */
121 {USB_DEVICE(0x1199, 0x9015)}, /* Sierra Wireless Gobi 3000 Modem device */
122 {USB_DEVICE(0x1199, 0x9018)}, /* Sierra Wireless Gobi 3000 QDL */
123 {USB_DEVICE(0x1199, 0x9019)}, /* Sierra Wireless Gobi 3000 Modem device */
124 {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */
125 {USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */
126 {USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */
127 {USB_DEVICE(0x0AF0, 0x8120)}, /* Option GTM681W */
128
129 /* non Gobi Qualcomm serial devices */
130 {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 0)}, /* Sierra Wireless MC7700 Device Management */
131 {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 2)}, /* Sierra Wireless MC7700 NMEA */
132 {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 3)}, /* Sierra Wireless MC7700 Modem */
133 {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 0)}, /* Sierra Wireless MC7750 Device Management */
134 {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 2)}, /* Sierra Wireless MC7750 NMEA */
135 {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 3)}, /* Sierra Wireless MC7750 Modem */
136 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 0)}, /* Sierra Wireless MC7710 Device Management */
137 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 2)}, /* Sierra Wireless MC7710 NMEA */
138 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 3)}, /* Sierra Wireless MC7710 Modem */
139 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68c0, 0)}, /* Sierra Wireless MC73xx Device Management */
140 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68c0, 2)}, /* Sierra Wireless MC73xx NMEA */
141 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68c0, 3)}, /* Sierra Wireless MC73xx Modem */
142 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 0)}, /* Sierra Wireless EM7700 Device Management */
143 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 2)}, /* Sierra Wireless EM7700 NMEA */
144 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 3)}, /* Sierra Wireless EM7700 Modem */
145 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 0)}, /* Sierra Wireless EM7355 Device Management */
146 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 2)}, /* Sierra Wireless EM7355 NMEA */
147 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 3)}, /* Sierra Wireless EM7355 Modem */
148 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 0)}, /* Sierra Wireless MC7305/MC7355 Device Management */
149 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 2)}, /* Sierra Wireless MC7305/MC7355 NMEA */
150 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 3)}, /* Sierra Wireless MC7305/MC7355 Modem */
151 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 0)}, /* Netgear AirCard 340U Device Management */
152 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 2)}, /* Netgear AirCard 340U NMEA */
153 {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 3)}, /* Netgear AirCard 340U Modem */
154 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 0)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card Device Management */
155 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card NMEA */
156 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 3)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card Modem */
157 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a3, 0)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card Device Management */
158 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a3, 2)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card NMEA */
159 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a3, 3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card Modem */
160 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a4, 0)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card Device Management */
161 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a4, 2)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card NMEA */
162 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a4, 3)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card Modem */
163 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a8, 0)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card Device Management */
164 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a8, 2)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card NMEA */
165 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a8, 3)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card Modem */
166 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a9, 0)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card Device Management */
167 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a9, 2)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card NMEA */
168 {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a9, 3)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card Modem */
169
170 { } /* Terminating entry */
171};
172MODULE_DEVICE_TABLE(usb, id_table);
173
174static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
175{
176 struct usb_host_interface *intf = serial->interface->cur_altsetting;
177 struct device *dev = &serial->dev->dev;
178 int retval = -ENODEV;
179 __u8 nintf;
180 __u8 ifnum;
181 bool is_gobi1k = id->driver_info ? true : false;
182 int altsetting = -1;
183
184 dev_dbg(dev, "Is Gobi 1000 = %d\n", is_gobi1k);
185
186 nintf = serial->dev->actconfig->desc.bNumInterfaces;
187 dev_dbg(dev, "Num Interfaces = %d\n", nintf);
188 ifnum = intf->desc.bInterfaceNumber;
189 dev_dbg(dev, "This Interface = %d\n", ifnum);
190
191 if (nintf == 1) {
192 /* QDL mode */
193 /* Gobi 2000 has a single altsetting, older ones have two */
194 if (serial->interface->num_altsetting == 2)
195 intf = &serial->interface->altsetting[1];
196 else if (serial->interface->num_altsetting > 2)
197 goto done;
198
199 if (intf->desc.bNumEndpoints == 2 &&
200 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
201 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
202 dev_dbg(dev, "QDL port found\n");
203
204 if (serial->interface->num_altsetting == 1)
205 retval = 0; /* Success */
206 else
207 altsetting = 1;
208 }
209 goto done;
210
211 }
212
213 /* allow any number of interfaces when doing direct interface match */
214 if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) {
215 dev_dbg(dev, "Generic Qualcomm serial interface found\n");
216 altsetting = 0;
217 goto done;
218 }
219
220 if (nintf < 3 || nintf > 4) {
221 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
222 goto done;
223 }
224
225 /* default to enabling interface */
226 altsetting = 0;
227
228 /* Composite mode; don't bind to the QMI/net interface as that
229 * gets handled by other drivers.
230 */
231
232 if (is_gobi1k) {
233 /* Gobi 1K USB layout:
234 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
235 * 1: serial port (doesn't respond)
236 * 2: AT-capable modem port
237 * 3: QMI/net
238 */
239 if (ifnum == 0) {
240 dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n");
241 altsetting = 1;
242 } else if (ifnum == 2)
243 dev_dbg(dev, "Modem port found\n");
244 else
245 altsetting = -1;
246 } else {
247 /* Gobi 2K+ USB layout:
248 * 0: QMI/net
249 * 1: DM/DIAG (use libqcdm from ModemManager for communication)
250 * 2: AT-capable modem port
251 * 3: NMEA
252 */
253 switch (ifnum) {
254 case 0:
255 /* Don't claim the QMI/net interface */
256 altsetting = -1;
257 break;
258 case 1:
259 dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
260 break;
261 case 2:
262 dev_dbg(dev, "Modem port found\n");
263 break;
264 case 3:
265 /*
266 * NMEA (serial line 9600 8N1)
267 * # echo "\$GPS_START" > /dev/ttyUSBx
268 * # echo "\$GPS_STOP" > /dev/ttyUSBx
269 */
270 dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
271 break;
272 }
273 }
274
275done:
276 if (altsetting >= 0) {
277 retval = usb_set_interface(serial->dev, ifnum, altsetting);
278 if (retval < 0) {
279 dev_err(dev,
280 "Could not set interface, error %d\n",
281 retval);
282 retval = -ENODEV;
283 }
284 }
285
286 return retval;
287}
288
289static int qc_attach(struct usb_serial *serial)
290{
291 struct usb_wwan_intf_private *data;
292
293 data = kzalloc(sizeof(*data), GFP_KERNEL);
294 if (!data)
295 return -ENOMEM;
296
297 spin_lock_init(&data->susp_lock);
298
299 usb_set_serial_data(serial, data);
300
301 return 0;
302}
303
304static void qc_release(struct usb_serial *serial)
305{
306 struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
307
308 usb_set_serial_data(serial, NULL);
309 kfree(priv);
310}
311
312static struct usb_serial_driver qcdevice = {
313 .driver = {
314 .owner = THIS_MODULE,
315 .name = "qcserial",
316 },
317 .description = "Qualcomm USB modem",
318 .id_table = id_table,
319 .num_ports = 1,
320 .probe = qcprobe,
321 .open = usb_wwan_open,
322 .close = usb_wwan_close,
323 .write = usb_wwan_write,
324 .write_room = usb_wwan_write_room,
325 .chars_in_buffer = usb_wwan_chars_in_buffer,
326 .attach = qc_attach,
327 .release = qc_release,
328 .port_probe = usb_wwan_port_probe,
329 .port_remove = usb_wwan_port_remove,
330#ifdef CONFIG_PM
331 .suspend = usb_wwan_suspend,
332 .resume = usb_wwan_resume,
333#endif
334};
335
336static struct usb_serial_driver * const serial_drivers[] = {
337 &qcdevice, NULL
338};
339
340module_usb_serial_driver(serial_drivers, id_table);
341
342MODULE_AUTHOR(DRIVER_AUTHOR);
343MODULE_DESCRIPTION(DRIVER_DESC);
344MODULE_LICENSE("GPL v2");